Structure of the Atom-Atomic Number and Mass Number [CBSE (Central Board of Secondary Education) Class-9 Science]: Questions 1 - 7 of 7

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Question 1

Question MCQ▾

Unit positive charge carried out the nucleus of an atom is termed as the:

Choices

Choice (4)Response

a.

Atomic number

b.

Protons

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

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Question 2

Question MCQ▾

Isobar has different number of:

Choices

Choice (4)Response

a.

Neutrons

b.

Protons

c.

Electrons

d.

All a., b. and c. are correct

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Question 3

Question MCQ▾

Isotopes are used in:

Choices

Choice (4)Response

a.

Nuclear reactors as fuel

b.

Estimating age of old archaeological samples

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

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Question 4

Question MCQ▾

Isotopes used in the treatment of:

Choices

Choice (4)Response

a.

Cancer

b.

AIDS

c.

Goitre

d.

Both a. and c. are correct

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Question 5

Question MCQ▾

Isotopes of carbon are:

Choices

Choice (4)Response

a.

6C13,6C13,6C13

b.

6C12,6C13,6C14

c.

6C12,7C12,8C12

d.

Question does not provide sufficient data or is vague

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Question 6

Question MCQ▾

Mass number is represented by:

Choices

Choice (4)Response

a.

E

b.

Z

c.

A

d.

P

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Question 7

Question MCQ▾

Isotopes are the:

Choices

Choice (4)Response

a.

Atoms of the different elements having different atomic number but the same mass number

b.

Atoms of the same element

c.

Atoms of the same element having same atomic number but different mass number

d.

Question does not provide sufficient data or is vague

Edit